A former U.S. Senator inside the Adelson's luxury box at the Quicken Loans arena told Independent Journal Review that Cruz approached the suite after he finished his speech that fell short of endorsing Republican presidential nominee Donald Trump.

Cruz was not welcome in the suite “because he's a piece of sh*t,” the Senator said.

Cruz was stopped at the door because several attendees inside the suite were furious with his decision to not endorse Trump. An aide to Adelson then confirmed that Cruz was turned away.

A spokesperson for Cruz was not immediately available for comment.

Multiple other news outlets reported the incident. BuzzFeed and CNN reported that Cruz was denied entry, which coincided with an outburst by Washington state Republican Party chairman Susan Hutchison.

During his speech, Cruz briefly congratulated Trump on obtaining the party's nomination, but avoided mentioning his name any further.

Rather, Cruz touched on hot issues such as animosity toward police and the rise of violent extremism in the Middle East.

At the end of his speech, Cruz told RNC attendees to vote in line with founding principles, without mentioning the GOP's newly minted nominee.

“And to those listening, please, don’t stay home in November,” Cruz said. “Stand, and speak, and vote your conscience, vote for candidates up and down the ticket who you trust to defend our freedom and to be faithful to the Constitution.”